Home / 19,775.53-27,290.34-11,161.79

Finding the Fourth Proportional to 19,775.53, 27,290.34 and 11,161.79

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Solution

The fourth proportional to 19,775.53, 27,290.34 and 11,161.79 is: 15,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.53 : 27,290.34 = 11,161.79 : x
  2. Step 2: Convert to fraction form
    19,775.53/27,290.34 = 11,161.79/x
  3. Step 3: Cross multiply
    19,775.53x = 27,290.34 × 11,161.79
  4. Step 4: Simplify right side
    19,775.53x = 304,609,044.11
  5. Step 5: Solve for x
    x = 304,609,044.11/19,775.53
  6. Step 6: Final answer
    x = 15,403.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.